Home / 121,126.60-181,517.10-89,288.20

Finding the Fourth Proportional to 121,126.60, 181,517.10 and 89,288.20

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Solution

The fourth proportional to 121,126.60, 181,517.10 and 89,288.20 is: 133,804.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,126.60 : 181,517.10 = 89,288.20 : x
  2. Step 2: Convert to fraction form
    121,126.60/181,517.10 = 89,288.20/x
  3. Step 3: Cross multiply
    121,126.60x = 181,517.10 × 89,288.20
  4. Step 4: Simplify right side
    121,126.60x = 16,207,335,128.22
  5. Step 5: Solve for x
    x = 16,207,335,128.22/121,126.60
  6. Step 6: Final answer
    x = 133,804.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.